Philadelphia Society offers paper on polyester polyols.
According to the speaker, studies compared polyurethanes made with these polyester polyols versus other polyols such as hexane diol adipates, polycaprolactone, hexane diol carbonate, PTMEG, PPG, and polybutadiene diols. One part polyol was reacted wtih 3.1 parts pure MDI and two parts butane diol in this study. The urethanes were reacted using the prepolymer method. Moisture, hydrolysis, radiation, oxidation, chemical and weather resistance, and heat stability testing were all performed. The measurement of physical properties including modulus, tensile strength, elongation, Shore A hardness, and [T.sub.g] were conducted. In most cases, the dimerized fatty acid products produced physical properties better to or equal to the above mentioned competitive grades, Mr. McNamee stated.
--Brian Boorman, Philadelphia Society President Elect
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|Title Annotation:||Society News|
|Date:||Mar 1, 2004|
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